* poc: Use react-popper for tooltips #10389

* poc: Add popover component and use a hoc() for Tooltip + Popover to avoid code duplication #10389

* jest: Add snapshot tests to Popover and Tooltip #10389

* poc: Move target from hoc into Popover/Tooltip-component #10389

* poc: Clean up unused styles and use the existing Grafana style/colors on popper tooltip #10389

* poc: Remove test code before PR

* poc: Remove imports used in poc but shouldn't be included anymore #10389